INDEX 



191 



Hoppe-Seyler, on fermentation of cellulose, 

 177 ; on oxygen and micro-organisms, 

 175- 



Human body, bacteria in, 139. 



Hiippe, on involution forms, 170 ; on lactic 

 fermentation, 176. 



Hydrogen, inhibitory action of, 86 ; produc- 

 tion of, 122. 



Hydrolytic action of enzymes, 109. 



Hydrophobia, inoculation for, 184. 



Hyphae, 36. 



Hyphomycetes, 41. 



Immunity, acquired, 163 ; method of pro- 

 ducing, 163, 164; duration of, 164; 

 hereditary, 165 ; literature of, 183, 184 ; 

 peculiarities of, 164. 



Incubation period, 158. 



Incubators, use of, 75. 



Indican, fermentation of, 124. 



Indigo, production of, 177; —fermentation, 

 177. 



Indigo/era tinctoria, 124. 



Indigoglucine, production of from indican, 

 124. 



Indol, 99, 100 ; absence of from cheese, 

 119; production of by cholera germs, 

 101, 156; by bacteria, 98 ; — reaction, 



155- 



Infection, 180; conditions for, 145; mode 



of, 144, 145 5 — thread, 94, Fig. 21. 

 Inhibitory coefficient, 82. 

 Inoculation, principle of, 144 ; by insect 



stings, 145 ; methods, toxines, 163, 



attenuated cultures, 164 ; for small-pox, 



168. 

 Intestine, bacteria of, 141 ; sterility of in 



new-born infants, 142. 

 Invertase, action of on cane sugar, 1 10 ; 



properties of, 131. 

 Involution forms, 26, 27 ; literature of, 170. 

 Iodine trichloride, influence of on virulence 



of diphtheria and tetanus bacilli, 29 ; 



inhibitory percentage of, 82. 

 Iodococcus, presence of granulose in, 139. 

 Iodoform, lethal percentage of, 83. 

 Iron, necessity of, 54; — bacteria, nutrition 



of, 69; literature of, 172. 

 Isobutyl alcohol, production of by yeast, 132. 

 Isobutyleneglycol, production of by yeast, 



132. 

 Isolation of pathogenic bacteria, methods 



of, 143- 



Janowski, influence of light on bacteria, 172. 

 Japan, nitrite bacteria of, 105. 

 Java, nitrate bacteria of, 105. 

 Jenner's vaccination, 168. 



Kappes, on composition of bacteria, 171. 

 Kaspareck and Kornauth, on infection of 

 plants by anthrax, 179. 



Kephir, composition of, 120 ; inversion of 

 lactose by, 131 ; production and pro- 

 perties of, 119, 120. 



Kitasato, on tetanus bacillus, 181 ; inocula- 

 tion of, 181 ; poison of, 182. 



Klechi (v.) on B. saccharobutyricus, 177 ; 

 on ripening of cheese, 177. 



Klein, on influence of light on fungi, 172. 



Klocker and Schioning, on Saccharomyces, 

 178. 



Kloster, definition of, 32. 



Robert, on intoxications, 183; on ptomaines, 

 175- 



Koch, on anthrax, 2, 169, 181 ; on Bacillus, 

 32 ; on B. anthracis, 149 ; on cholera, 

 155, 182 ; on disinfection, 173 ; on 

 gelatine culture, 172 ; method of, 168, 

 173 ; steamer of, 76 ; on tubercle 

 bacilli, 152, tingibility of, 181; on 

 tuberculin, 160, 182 ; on tuberculosis, 

 181. 



Koch and Hosaeus, on slime fungus of 

 sugar, 178. 



Kornauth, on bacteria in plants, 179; on 

 typhoid inoculation of mice, 182. 



Kossel, on diphtheria toxine, 182. 



Kossowitsch, on assimilation of N by algae, 

 174. 



Kramer, on economic importance of bacteria, 

 176; on mucilage production, 177; on 

 ripening of cheese, 177. 



Krusse, on lysines, 184. 



Kuhn, on putrefactive bacteria, 175. 



Kiihne, on tuberculin, 182. 



Kurloff and Wagner, action of gastric juice 

 on bacteria, 174. 



Kutscher, on phosphorescent bacteria, 172. 



Lactic acid, butyric fermentation of, 115, 

 122; occurrence of in cheese, 119; 

 production of by bacteria, 115 ; — in 

 rancid butter, 1 18 ; by Leuconostoc,\2$ ; 

 in fermenting bread, 125 ; optical 

 splitting of by bacteria, 115. 



Lactic bacteria, non-liquefaction of gelatine 

 by, 58 ; in kephir and in beer, 120. 



Lactic fermentation, 116, 117; literature 

 of, 176. 



Lafar, on acetic fermentation, 176 ; on 

 acidity of yeast, 177 ; on spontaneous 

 generation, 171 ; on technical myco- 

 logy, 168, 176, 177. 



Lamella (middle), solution of by bacteria, 

 123. 



Lamprocystis, 106 ; L. roseo-fiersirina, 65, 

 Fig. 17. 



Lathraea, bacteria in leaf-chambers of, 138. 



Laverania, 40. 



Lead acetate, lethal percentage of, 13 ; as 

 disinfectant, 84. 



Leguminosae, nitrogenous nutrition of, 89 ; 

 partial parasitism of, 94, 95. 



